.Putin contacts cross-border strike in Kursk area a 'justification' The Washington PostRussia states Ukrainian soldiers crossed right into its own territory and also released 'extensive attack' CNNHow deep in to Russian area has Ukraine's shock August attack arrived at? MeduzaUkraine Launches Rare Cross-Border Ground Attack Into Russia The Nyc TimesRussia: Condition of emergency in Kursk surrounded by incursion DW (English).